Two-cycle hydrocarbon-engine.



PATENTED JAN. 28, 1908. D. L. OULTONi 7 TWO CYCLE HYDROCARBON ENGINE.

3 SHEETS-SEEET 2.

APPLICATION FILED MAY 17, 1907.

llililiiilli D. L. OULTON.

TWO CYCLE HYDROGARBON ENGINE. APPLICATION FILED MAY 17, 1907.

PATENTED JAN. 28, 1908'.

3 SHEETS-SHEET 3- BF DANIEL L. OULTON,

OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE DUO MOTOR COM- PANY, OFBOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TWO-CYCLE HYDROCARBON-ENGINE.

Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed May 17; 1907. Serial No. 374.171-

To all-whom it my concern: I

Be it known that I, DANIEL L. OULTON, a citizen of the United States,residing at Boston, Massachusetts, have invented certain new and usefulImprovements in Two-Cycle I-lydrocarbon-Engines, of which the followingis a specification.

My invention relates to hydrocarbon enines and is shown in connectionwith that orm of hydrocarbon engines set forth in an lapplication filedby me on the 17th day of arch, 1906, having the Serial Number 306,526.

t is lllustratedin the accompanying drawin s, in which,

T'gure 1 is a central sectional elevation of the engine. Fig. 2 is ahorizontal section on the line o:-a: of Fig. 1 showing a two-cylinderengine, a part of the section being at line 'y-'y Fig. 1. Fig. 3 is ahorizontal section of the line zz of Fig. 1. Fig. 4 is an elevation ofthe cylinder section at v-e of Fig. 1, and the lower part. Fig. 5 showsthe pitman partly in section.

That part of my invention illustrated in the drawings relates to theconstruction of the water jacket and the passages for the flow of waterin connection with said jacket.

The object of the invention is to cheapen the construction and toeliminate the. iping ordinarily used with its attendant elbows, unionsand joints and involving large original expense and subsequent care andwork to insure their continued water-tight character.

My invention consists in the peculiar construction of the castings withthe passages and chambers therein, whereby I reduce the number of partsas more fully hereinafter explained.

For the purpose of clearness I have described other parts of theinvention not herein claimed but more or less intimately connected withthe parts claimed.

The engine shaft 1 is mounted in the usual manner in bearings 2supported by the baseplate 4. From this base plate rise suitable osts 6rigidly secured to the cylinder castmg 15, and within the cylinder 10 isthe bucket plunger 25 joined by a tubular piston rod 20 to the pit-man9, the latter being connected with the crank-pin 7.

Between the up er section of said cylinder and the water jac et 30 castintegral therewith, is the water chamber 31, the cylinder head 35 beingalso chambered and put into communication with the former as hereinafterset forth.

As shown. in Fig. l, the intake port 12 opens into the cylinder 10immediately below the topmost limit of the lower edge of the plunger orpiston 25, and the by pass 17 which communicates with the compressionchamber 16, is located at just above the upper surface of said pistonwhen in its lowermost position. In order that the products of theexplosive combustion may escape as the compressed mixture enters themain cylinder, the exhaust port 11 opens from the cylinder 10 oppositeto the by-pass and at substantially the same horizontal plane, or

slightly thercabove.

As is evident, one of the marked causes for considerable of the ex enseof an engine of this character is the l abor entailed in the many pipefittings ordinarily required. To minimize this as much as possible, Irovide a casting 40 for securing to the cylin or cast-- ing and takingthe place ofseveral of the pipe sections, elbows, oints otherwiseneeded. The value of this is es ecially great for multiple cylinderengines, w ere by its means no more piping and fittings are requiredthan-for the single cylinder engine. As shown in Figs. 1, 2, and 3 thiscasting is formed with a central passage-.43 communicating with thevarious exhaust ports 11 of the various cylinders, and terminating in anexhaust pipe 44:, a passage 41 taking the mixture through a supply pipe42 receiving the air and hydrocarbon from any suitable carbureter anddelivering the same to the intake ports 12 of the cylinders. Not onlydoes this reduce the number of pipes and fittings, but in case it isnecessary to remove the cylinder for any purpose, the pi ing can remainin this casting 4O intact, t e

and other fittings latter alone being unbolted from the cylinder 1 5 notstrike the cylinder with the'chill' insepa'ra--- the reasons for this Iam not engine, but dim-inishesthe noise of the eX- haust arid serves asa partial muffler without the resistance inseparable from the latter asusually constructed.

5 Toi'c'ool the exhaust as stated, the passage 43 is almost whollysurrounded by a water" jacket 47 forming a part of the channel forconducting the water from, any suitable.

; supply-pipe 48 to the cylinder water jacket 1 9131, the latter beingformed with ports 32 communicating with this channel 47,. In

' addition to this advantage of coolingthe ex haust, the water thussupplied to the cylinder water jacket is partially warmed, and so dejes;

'- ble from the usual type of internal combustion engine formarinepurposes, where the water jacket is supplied irect from the waterbeneath the boat.

strains of the extremes of heat and cold not alone rack and weaken itwith undue quickness, but the best results in the production of powerare not obtained Just' what are repared to "state, but the fact seemsclear. y thus giving the water a preliminary warming, those ill effectsarecobfviated and at the same time positive advantages obtained ofcooling the exhaust. a Ordinarily the-exhaust port runs horizontallyfrom the cylinder, but as shown in Fig, 1 I prefer to slant it downwardto a considerable degree. The main advantage of this is that it permitsof the water inlets 32 being located at the lowest line of thewaterjacket, as illustrated in Fig. 1, and so enables the same to bethoroughly drained whenever desired. U v The partition 13 separating theintake and exhaust is concaved on both surfaces in order to render thesame sufficiently thin to permit the heat, from the exhaust tostrike'through and Warm the ingoing mixture while at the t5 sametimeallowing enough surface Within the. cylinder forthegroove 19, andenough vexterior surface to give a gas-tight joint between itselfand'the casting 40. By having. said partition 13 comparatively thin andthe .}Q- intake mixture warmed thereby, the latter isbetter prepared forits work.

The water from the water jacket 31 is conducted therefrom to the spacein the cylinder head 35 in the following manner. This is *5 sometimesdoneby means of piping, which mtnrits [attendant elbows, andumons,..requires-no less than nine joints. This means originalexpenseand subsequent careand work to insure their constant water-tight.60 character. Moreover, whenever it is necessary. to remove thecylinder. head, as is sooften requiredin order to overhaul the iston'and parts withinthe cylinder, most these ioim have to. he unscrewed,entailing much i Educts-it to the -It is found that where T I saidcasting ,50 lsdivided 2 0[the engine cylinder 1s cooled too much, the

' tically' impossible to and water-isfound to leak internalcombustionhead having eachvaperip eral surface one-awith the first named flatsurface,there labor in separating and much more in reunitmg.

By means of my improvement, which consists of a single casting 50 foreach cylinder, no pilping is needed but asingle section uniting t ecasting of each cylinder. As shown, the water space in each cylinderhead is formed with a radial partition 37 and the i water is' suppliedto one side of the same, in

order to force the current to flow entirely through such space 36. ingsin said s ace, and also over the outlet 33 of the cylin or casting isbolted the casting 50 which is so partitioned that it takes the water oening at one side of the partition 37, and

g tfen'takes itjtromfthe other side and con- I pipe 52. As shown in Fig.4,

' into two sections,

one section or chamber 53 communicating with the outlet 33 and oneopening 38 in the head, the second chamber54 communicating with.theqoppnnings 39in thehead and also with the cy drical section'55 intothe ends of which; ate -ta pedthe which the water flow. Not only isthismethodof conveying the water from great advantage ipe sections bytomary'metho'd of having openings directly.

' space 36 into the space downward from the 31.; The trouble with'thisis that it .is prac.

insure "the permanent. water tight haracter of such arrangement, I

through into the" finder its-91f, fi l slyfaflecting, the oper tion'cftheengine. g Y

. With 'my devicelavoid all possibility of such leakage, with thecomplicated. piping ,What' I and at the same time dispense method.

Over the two openows there om to the over-l the-cylinder to its headfa,oyen the system of piping described above, but also over the more cus--from said outlet,; conveys it to the claim as my invention and for whichI desire Letters Patent is as follows \j 1'. The combination pf a water}jacketed ,en ine cylinder and continuation ofthefother, of amem orremovablysecured to said surfaces and formed with :a plurality ,ofchambersone of which communicates with the'swater space about thecylinder and also with the water space in the head, and anotherof'whichchambers communicates with the water space in said.

head and with any suitable water drain.

2. The combination witha water jacketed internal combustion enginecylinder having means forsup lying water to one part thereof and formevated part of its peri he through which is an1ofening,; a remove. 1e dadfor said cylinderaving an annular water space, aradial partition and.aflat surface in the same lane eing twoiop'enings through the last namedflat surwitha flatsurface at an eleface, one at each side of saidpartition, of a said partition and with one or more water memberremovabiy secured to said two flat drain pipes. 10 surfaces and formedwith two vchambers, one In testimony whereof, I aifix my signature ofwhich isin communicatit on with the open in presence of two witnesses.

DANIEL L. oULToN.

ing from the cylinder waer jacket and also i with the opening at oneside of said partition, Witnesses:

"and the other of which chambers oommunl- A. H. HARRIMAN,

gates with the opening at the'other side of ELLIS SPEAK, Jr.

